CNDP1 and diabetic kidney disease: Many genetic loci, including the carnosinase dipeptidase 1 (CNDP1) gene (Ahluwalia et al. 2011; Chakkera et al. 2011; Freedman et al. 2007a; Janssen et al. 2005; Mooyaart et al. 2011), have been reported to play a role in susceptibility to develop diabetic kidney disease (DKD).